Depending on your level of awareness and detachment you will have to FEEL (suppressed emotions) first and then you can watch them after you have cleared the emotions. In some cases, for some people it can seem that you are losing control and that is ok. Let them come out naturally and don't be surprised at the depth and strength of the emotion. It is not unusual to cry yourself so deeply that you shake all over. When the dust settles you will understand the witnessing function better. You are learning the inner landscape of your consciousness and that is a foundation for deeper growth in awareness.
Most people are prisoners of the unconscious until a traumatic episode breaks the spell over the mind and ego and you feel a form of helpless insanity. You can find yourself wailing helplessly in a curled up ball that seems like uncontrolled agony. Waves of fear can challenge you, but not defeat you.
Emotions are like clouds that block the sun, they must be cleared before we can feel the radiance of the sun naturally without effort on our part. Awareness is effortless knowing, natural knowing. When the dust settles you are aware.
http://knowingwhispers.blogspot.com/2014/03/the-birth-of-awareness.html